ABSOLUTELY GET THE HEAD SETS! I opted out and wish I had gotten them. It's SO COOL. They have built literally a hallway for each "class." The lower class you could here the engine running overhead, etc. They even had a room with what each class would have looked like.
At the beginning you are given a ticket which tells you what family you belong to and what class you will be staying in and also a brief history about your person.
When you hit the iceberg you go into a room that was the same cold temperature as it was on that night-it was like you were standing in a freezer.
It was really interested and unique. They even have a piece of the titanic! Everything is very honest to the history.
I could have stayed there for 2 hours so plan ahead. this isn't something you want to breeze thru. Very informative and educational as well as fantastical lay out. I really felt like I was a part of the Titanic. It was awesome.
Totally RECOMMEND IT!